搜尋標籤: "eye defects"

Short sight, long sight and their correction… duration 4 minutes 7 seconds Short sight, long sight and their correction… Short sight, long sight and their correction (Demonstration)	Short sight, long sight and their correction (Demonstration) In this experiment, we will learn aboout short sight, long sight and how to correct these eye defects. eye defects +3 更多 ronson@hkecl.net 0 個讚 654 次播放學科科學教育 Science Education 學習階段第三學習階段 (中一至中三) Key Stage 3 (S1 - S3) 第三學習階段 (中二) Key Stage 3 (S2) 作者教育局課程資源組版權聲明所有版權由香港特別行政區政府擁有上載日期 31/8/2006